package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.dto.DishDTO;
import com.sky.dto.DishPageQueryDTO;
import com.sky.entity.Dish;
import com.sky.entity.DishFlavor;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.DishFlavorMapper;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealDishMapper;
import com.sky.result.PageResult;
import com.sky.service.DishService;
import com.sky.vo.DishVO;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.List;

@Service
@Slf4j

public class DishServiceimp implements DishService {
    @Autowired
    private DishMapper dishMapper;
    @Autowired
    private DishFlavorMapper dishFlavorMapper;
    @Autowired
    private SetmealDishMapper setmealDishMapper;
    @Override
    @Transactional
    public void saveWithFlavor(DishDTO dishDTO) {
        Dish dish=new Dish();
        BeanUtils.copyProperties(dishDTO,dish);
        dishMapper.insert(dish);
        Long id = dish.getId();
        List<DishFlavor> flavors=dishDTO.getFlavors();
        if (flavors!=null&&flavors.size()>0){
            flavors.forEach(dishFlavor -> {
                dishFlavor.setDishId(id);
            });
            dishFlavorMapper.insertBatch(flavors);
        }


    }

    @Override
    public PageResult pageQuery(DishPageQueryDTO dishPageQueryDTO) {
        PageHelper.startPage(dishPageQueryDTO.getPage(),dishPageQueryDTO.getPageSize());
       Page<DishVO> page=  dishMapper.pageQuery(dishPageQueryDTO);

        return new PageResult(page.getTotal(), page.getResult());
    }

    @Override
    public void deleteBatch(List<Long> ids) {
        //判断当前菜品是否是起售中；
        for (Long id :ids) {
           Dish dish= dishMapper.getById(id);
           if(dish.getStatus()== StatusConstant.ENABLE){
               //当前菜品处于起售中
               throw new DeletionNotAllowedException(MessageConstant.DISH_ON_SALE);
           }
        };

     List<Long> setmealIds=setmealDishMapper.getSetmealIdsByDishIds(ids);
    if(setmealIds!=null&&setmealIds.size()>0){
        throw new DeletionNotAllowedException(MessageConstant.DISH_BE_RELATED_BY_SETMEAL);

    }
        for (Long id:
             ids) {
            dishMapper.deleteById(id);
            dishFlavorMapper.deleteByDishId(id);

        }
    }

}
